Teen climate activist Greta Thunberg hit back at U.S. President Donald Trump after he dismissed her Time Person of the Year award with the suggestion that she "chill" and go to the movies. 

"So ridiculous," 73-year-old Trump tweeted when he reacted to her Time honor.

"Greta must work on her Anger Management problem, then go to a good old fashioned movie with a friend! Chill Greta, Chill!"

Thunberg, who has shot to global fame since launching her "Fridays For Future" climate crisis protests, had a quick comeback.

"A teenager working on her anger management problem. Currently chilling and watching a good old fashioned movie with a friend," she wrote as her new Twitter bio.

Thunberg, from Sweden, is rapidly gaining experience in fending off barbs from unfriendly world leaders.

Her campaigning began in August 2018, when she started skipping class to stand outside Sweden's parliament every Friday with a sign labeled "School strike for climate."

Since then, she has recorded an astonishing rise. She has even been touted for a potential Nobel prize.

At a UN climate summit in Madrid this week, Thunberg angrily accused rich countries of "misleading" the world over their response to climate change. In perhaps her most iconic appearance, she attacked world leaders' inaction at another UN summit in New York in September, thundering, "How dare you?" 

The latest Thunberg media storm reached France on Thursday.

President Emmanuel Macron said there's a "Greta club and a Donald club" and "I would like us to make our own club."

"There are plenty of people who want to see change, but it's incredibly hard because it's never fast enough for Greta, and it's always too much for Donald," Macron told a student from a program he launched two years ago to counter Trump's decision of withdrawing the U.S. from the Paris climate treaty.

Trump was selected by the magazine in 2016 after his shock win in the presidential election. In 2017, Trump publicly aired his frustration with not being selected again when he said he was refusing to do an interview with Time because he'd been told only that he would "probably" be chosen.

(With input from AFP)

(Cover: Swedish environmental activist Greta Thunberg delivers a speech during a debate with French parliament members at the National Assembly in Paris, France, July 23, 2019. /Reuters Photo)